9 Flow Regime Patterns and Their Changes
169
Table 9.1
(continued)
River
Gauge
Catchment
area [km 2
]
H
[mm]
H
ground [%] Flow variability
High-water phase
Low-water phase
Type
of
regime
Daily Cv
Extreme
irregularity
Q
max /Q
min
SC
Period
SC
Period
Mogilnica
Konojad
663
79
33.1
1.440
1325
0.556
February–April 0.441
July–October
3
Liwiec
Łochów
2466
137
47.1
1.148
240
0.509
February–April 0.544
July–September
3
Wkra
Trzciniec
1928
168
53.0
0.746
94.0
0.525
February–April 0.478
July–September
2
Lake districts
Drawa
Drawsko Pom 609
226
71.1
0.554
22.2
0.516
January–April 0.422
July–October
2
Rega
Łobez
609
239
72.5
0.462
12.2
0.458
January–March 0.486
July–September
2
Słupia
Słupsk
1450
348
72.1
0.293
8.3
0.382
January–March 0.486
June–August
1
Pisa
Ptaki
3562
186
81.8
0.383
12.7
0.417
February–April 0.366
July–October
1
Łyna
S˛ epopol
3647
215
62.9
0.630
28.0
0.509
February–April 0.475
June–August
2
Guber
Prosna
1568
170
36.5
1.149
223
0.486
February–April 0.431
August–November
3
Types of regime: 1 – nival poorly formed, 2 – nival moderately formed, 3 – nival well-formed, 4 – nival-pluvial, 5 – pluvial-nival. Regime character (stability coefficient): SC < 0.20
– unstable; 0.20 < SC < 0.31 – relatively unstable; 0.31 < SC < 0.45 – relatively stable; 0.45 < SC < 0.62 – stable; SC > 0.62 – strongly stable